/Engine/Source/Editor/UnrealEd/Classes/Editor/EditorEngine.h
Uses the supplied factory to create an actor at the clicked location and adds to level.
A pointer to the new actor, or NULL on fail.
[AActor](API\Runtime\Engine\GameFramework\AActor) * UseActorFactoryOnCurrentSelection ( [UActorFactory](API\Editor\UnrealEd\ActorFactories\UActorFactory) * Factory, const FTransform * InActorTransform, EObjectFlags ObjectFlags )